Rocker Arms w/TK002 Trunnion Installed

The Rocker Arms w/TK002 Trunnion Installed from Brian Tooley Racing represent a precision upgrade for serious engine builders and high-performance enthusiasts. These rocker arms are engineered for small-block applications where valvetrain stability and durability directly impact overall engine reliability and power output. Pre-installed with the TK002 trunnion, this assembly eliminates assembly guesswork and ensures proper geometry from day one, making it ideal for both street and competition builds.

Brian Tooley Racing's rocker arms are manufactured to tight tolerances using premium materials that withstand sustained high RPM operation and aggressive valve spring pressures. The trunnion is the critical pivot point where rocker arm geometry affects valve lift accuracy, duration, and lift consistency—deviations here compound into measurable power loss and potential valvetrain failure. The pre-installed TK002 trunnion design ensures correct rocker arm ratio geometry and reduces friction at the pivot, supporting both naturally aspirated and forced-induction applications. This precision fit is essential when paired with aggressive camshaft profiles, high-lift valvesprings, or increased boost levels where valvetrain control becomes non-negotiable.

Experienced engine builders and race mechanics specify rocker arms with installed trunnions for quick, error-free assembly during short-block rebuilds and performance upgrades. These are compatible with small-block Chevy and similar conventional pushrod platforms where valvetrain precision directly correlates to horsepower delivery and engine longevity. Installation requires proper alignment with the intake and exhaust valve geometry of your specific build; verify compatibility with your cylinder head, camshaft lift, and spring seat pressure before ordering. For maximum benefit, pair these with a verified camshaft upgrade and checked pushrod lengths to ensure complete valvetrain optimization.